package com.nine.framework.web.exception;

import com.nine.common.constant.HttpStatus;
import com.nine.common.core.domain.AjaxResult;
import com.nine.common.core.text.Convert;
import com.nine.common.exception.DemoModeException;
import com.nine.common.exception.ServiceException;
import com.nine.common.utils.StringUtils;
import com.nine.common.utils.html.EscapeUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.dao.DataIntegrityViolationException;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.validation.BindException;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.MissingPathVariableException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.method.annotation.MethodArgumentTypeMismatchException;

import javax.servlet.http.HttpServletRequest;

/**
 * 全局异常处理器
 *
 * @author ruoyi
 */
@RestControllerAdvice
public class GlobalExceptionHandler {
	private static final Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class);

	/**
	 * 权限校验异常
	 */
	@ExceptionHandler(AccessDeniedException.class)
	public AjaxResult handleAccessDeniedException(AccessDeniedException e, HttpServletRequest request) {
		String requestURI = request.getRequestURI();
		log.error("请求地址'{}',权限校验失败'{}'", requestURI, e.getMessage());
		return AjaxResult.error(HttpStatus.FORBIDDEN, "没有权限，请联系管理员授权");
	}

	/**
	 * 请求方式不支持
	 */
	@ExceptionHandler(HttpRequestMethodNotSupportedException.class)
	public AjaxResult handleHttpRequestMethodNotSupported(HttpRequestMethodNotSupportedException e,
	                                                      HttpServletRequest request) {
		String requestURI = request.getRequestURI();
		log.error("请求地址'{}',不支持'{}'请求", requestURI, e.getMethod());
		return AjaxResult.error(e.getMessage());
	}

	/**
	 * 业务异常
	 */
	@ExceptionHandler(ServiceException.class)
	public AjaxResult handleServiceException(ServiceException e, HttpServletRequest request) {
		log.error(e.getMessage(), e);
		Integer code = e.getCode();
		return StringUtils.isNotNull(code) ? AjaxResult.error(code, e.getMessage()) : AjaxResult.error(e.getMessage());
	}

	/**
	 * 请求路径中缺少必需的路径变量
	 */
	@ExceptionHandler(MissingPathVariableException.class)
	public AjaxResult handleMissingPathVariableException(MissingPathVariableException e, HttpServletRequest request) {
		String requestURI = request.getRequestURI();
		log.error("请求路径中缺少必需的路径变量'{}',发生系统异常.", requestURI, e);
		return AjaxResult.error(String.format("请求路径中缺少必需的路径变量[%s]", e.getVariableName()));
	}

	/**
	 * 请求参数类型不匹配
	 */
	@ExceptionHandler(MethodArgumentTypeMismatchException.class)
	public AjaxResult handleMethodArgumentTypeMismatchException(MethodArgumentTypeMismatchException e,
	                                                            HttpServletRequest request) {
		String requestURI = request.getRequestURI();
		String value = Convert.toStr(e.getValue());
		if (StringUtils.isNotEmpty(value)) {
			value = EscapeUtil.clean(value);
		}
		log.error("请求参数类型不匹配'{}',发生系统异常.", requestURI, e);
		return AjaxResult.error(String.format("请求参数类型不匹配，参数[%s]要求类型为：'%s'，但输入值为：'%s'", e.getName(),
				e.getRequiredType().getName(), value));
	}

	/**
	 * 拦截未知的运行时异常
	 */
	@ExceptionHandler(RuntimeException.class)
	public AjaxResult handleRuntimeException(RuntimeException e, HttpServletRequest request) {
		String requestURI = request.getRequestURI();
		log.error("请求地址'{}',发生未知异常.", requestURI, e);
		return AjaxResult.error(e.getMessage());
	}

	/**
	 * 系统异常
	 */
	@ExceptionHandler(Exception.class)
	public AjaxResult handleException(Exception e, HttpServletRequest request) {
		String requestURI = request.getRequestURI();
		log.error("请求地址'{}',发生系统异常.", requestURI, e);
		return AjaxResult.error(e.getMessage());
	}

	/**
	 * 自定义验证异常
	 */
	@ExceptionHandler(BindException.class)
	public AjaxResult handleBindException(BindException e) {
		log.error(e.getMessage(), e);
		String message = e.getAllErrors().get(0).getDefaultMessage();
		return AjaxResult.error(message);
	}

	/**
	 * 自定义验证异常
	 */
	@ExceptionHandler(MethodArgumentNotValidException.class)
	public Object handleMethodArgumentNotValidException(MethodArgumentNotValidException e) {
		log.error(e.getMessage(), e);
		String message = e.getBindingResult().getFieldError().getDefaultMessage();
		return AjaxResult.error(message);
	}

	@ExceptionHandler(DataIntegrityViolationException.class)
	public AjaxResult handleDataIntegrityViolationException(DataIntegrityViolationException e) {
		log.error(e.getMessage(), e);
		if (e.getMessage().contains("foreign")) {
			return AjaxResult.error("无法删除，存在数据引用");
		}
		else if (e.getMessage().contains("Duplicate")) {
			return AjaxResult.error("无法保存，存在相同名称");
		}
		return AjaxResult.error("数据完整性异常，请联系管理员");
	}

	/**
	 * 演示模式异常
	 */
	@ExceptionHandler(DemoModeException.class)
	public AjaxResult handleDemoModeException(DemoModeException e) {
		return AjaxResult.error("演示模式，不允许操作");
	}
}
